<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>BuiltFromBits</title><description>Learn how data and AI systems actually work, from the bit up. Then prove it by shipping working code. Lessons, practice, videos and a podcast.</description><link>https://builtfrombits.com/</link><language>en</language><item><title>Why every database is secretly a log</title><link>https://builtfrombits.com/read/why-every-database-is-secretly-a-log/</link><guid isPermaLink="true">https://builtfrombits.com/read/why-every-database-is-secretly-a-log/</guid><description>Before indexes and query planners, there&apos;s an append-only file. Once you see it, replication and recovery stop being magic.</description><pubDate>Sun, 04 Oct 2026 00:00:00 GMT</pubDate><category>Storage</category></item><item><title>What a vector index actually stores</title><link>https://builtfrombits.com/read/what-a-vector-index-actually-stores/</link><guid isPermaLink="true">https://builtfrombits.com/read/what-a-vector-index-actually-stores/</guid><description>A vector database is a list of numbers per document, plus a shortcut that skips most of them. Here is what&apos;s on disk, and what the shortcut costs you.</description><pubDate>Tue, 29 Sep 2026 00:00:00 GMT</pubDate><category>Retrieval</category></item><item><title>How this site runs SQL in your browser</title><link>https://builtfrombits.com/read/how-this-site-runs-sql-in-your-browser/</link><guid isPermaLink="true">https://builtfrombits.com/read/how-this-site-runs-sql-in-your-browser/</guid><description>Every query on Built From Bits runs on your machine, not mine. Here is how that works, what it costs, and the trade-off I accepted to get there.</description><pubDate>Tue, 22 Sep 2026 00:00:00 GMT</pubDate><category>SQL</category></item></channel></rss>